Legal claims defining the scope of protection, as filed with the USPTO.
2. The meta-optical device of claim 1, wherein the meta-lens, the spacer layer, and the band pass filter are integrally formed on a substrate.
3. The meta-optical device of claim 1, wherein a thickness of the spacer layer is greater than a center wavelength ko of the operation wavelength band of the meta-lens and is smaller than 30 λo.
4. The meta-optical device of claim 1, wherein the band pass filter is an infrared cut-off filter.
5. The meta-optical device of claim 1, wherein the band pass filter is a color filter array comprising a red filter, a green filter, and a blue filter.
6. The meta-optical device of claim 1, wherein the band pass filter comprises at least one of a red filter, a green filter, and a blue filter.
7. The meta-optical device of claim 1, further comprises a protection layer provided on the plurality of nano-structures opposite to the spacer layer, a refractive index of the protection layer being less than a refractive index of the plurality of nano-structures.
8. The meta-optical device of claim 7, further comprises a plurality of second nano-structures two-dimensionally arranged on the protection layer.
10. The image capturing apparatus of claim 9, wherein a thickness of the spacer layer is greater than a center wavelength λo of the operation wavelength band of the meta-lens and is smaller than 30 λo.
11. The image capturing apparatus of claim 9, wherein the meta-lens, the spacer layer, and the band pass filter are integrally formed on a substrate.
12. The image capturing apparatus of claim 11, wherein the band pass filter is an infrared cut-off filter.
13. The image capturing apparatus of claim 12, wherein the meta-optical device is provided between the lens assembly and the image sensor.
14. The image capturing apparatus of claim 11, wherein the substrate is a cover glass for the image sensor.
15. The image capturing apparatus of claim 11, wherein the band pass filter is a color filter array comprising a red filter, a green filter, and a blue filter.
18. The image capturing apparatus of claim 17, wherein the meta-optical device is provided between the lens assembly and the image sensor.
19. The image capturing apparatus of claim 9, wherein the band pass filter comprises at least one of a red filter, a green filter, and a blue filter.
20. The image capturing apparatus of claim 19, wherein the band pass filter, the spacer layer, and the meta-lens are integrally formed on a substrate.
21. The image capturing apparatus of claim 20, wherein the meta-optical device is provided between the lens assembly and the image sensor.
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July 25, 2023
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